memorypool.c File Reference

memory pool More...

#include "memorypool.h"

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Defines

#define MAP_FAILED   ((void*)-1)

Functions

struct MemoryPool * MHD_pool_create (size_t max)
void MHD_pool_destroy (struct MemoryPool *pool)
void * MHD_pool_allocate (struct MemoryPool *pool, size_t size, int from_end)
void * MHD_pool_reallocate (struct MemoryPool *pool, void *old, size_t old_size, size_t new_size)
void * MHD_pool_reset (struct MemoryPool *pool, void *keep, size_t size)


Detailed Description

memory pool

Author:
Christian Grothoff

Definition in file memorypool.c.


Define Documentation

#define MAP_FAILED   ((void*)-1)

Definition at line 32 of file memorypool.c.

Referenced by MHD_pool_create().


Function Documentation

void* MHD_pool_allocate ( struct MemoryPool *  pool,
size_t  size,
int  from_end 
)

Allocate size bytes from the pool.

Returns:
NULL if the pool cannot support size more bytes

Definition at line 125 of file memorypool.c.

References MHD_YES.

Referenced by build_header_response(), connection_add_header(), MHD_set_connection_value(), parse_cookie_header(), and try_ready_chunked_body().

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struct MemoryPool* MHD_pool_create ( size_t  max  )  [read]

Create a memory pool.

Parameters:
max maximum size of the pool

Definition at line 71 of file memorypool.c.

References MAP_FAILED, MHD_NO, MHD_YES, and MMAP.

Referenced by MHD_connection_get_fdset().

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void MHD_pool_destroy ( struct MemoryPool *  pool  ) 

Destroy a memory pool.

Definition at line 108 of file memorypool.c.

References MHD_NO, and MUNMAP.

Referenced by MHD_cleanup_connections(), and MHD_connection_handle_idle().

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void* MHD_pool_reallocate ( struct MemoryPool *  pool,
void *  old,
size_t  old_size,
size_t  new_size 
)

Reallocate a block of memory obtained from the pool. This is particularly efficient when growing or shrinking the block that was last (re)allocated. If the given block is not the most recenlty (re)allocated block, the memory of the previous allocation may be leaked until the pool is destroyed (and copying the data maybe required).

Parameters:
old the existing block
old_size the size of the existing block
new_size the new size of the block
Returns:
new address of the block, or NULL if the pool cannot support new_size bytes (old continues to be valid for old_size)

Definition at line 162 of file memorypool.c.

Referenced by check_write_done(), get_next_header_line(), MHD_connection_handle_read(), process_broken_line(), and try_grow_read_buffer().

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void* MHD_pool_reset ( struct MemoryPool *  pool,
void *  keep,
size_t  size 
)

Clear all entries from the memory pool except for "keep" of the given "size".

Parameters:
keep pointer to the entry to keep (maybe NULL)
size how many bytes need to be kept at this address
Returns:
addr new address of "keep" (if it had to change)

Definition at line 210 of file memorypool.c.

Referenced by MHD_connection_handle_idle().

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